Pyramid Pure Nickel Round Wound 6 String, .012 - .056, GR61256star rating 5RAY CHESNADecember 5, 2009THE BEST FOR MY CAMPELLONE ARCHTOP ACOUSTIC/ELECTRIC. THE CLOSEST THING TO BRONZE TONE WITH A STRING THAT SOUNDS GREAT WITH MAGNETIC PICKUPS. THEY COST A BIT MORE BUT THEY LAST.